| [00:00.43] | Some of these ocean vagrants may offer protection, |
| [00:03.44] | like this pyrosome is doing for the shrimp. |
| [00:06.13] | In the world's deepest ocean, |
| [00:08.02] | averaging over two and a half miles deep, |
| [00:11.14] | new species are constantly being discovered. |
| [00:14.78] | Like this seahorse, never filmed before. |
| [00:18.37] | At dawn, |
| [00:18.98] | these little-known creatures retreat into the safety of the abyss. |
| [00:23.99] | But there are some predators that can follow them down. |
| [00:27.38] | Short-finned pilot whales are accomplished deep-sea divers. |
| [00:31.81] | Leaving the barren upper layers behind, |
| [00:34.16] | they can swim over half a mile down |
| [00:36.87] | and use their sonar to track the huge shoals of squid. |
| [00:41.33] | But they too are being tracked. |
| [00:44.99] | Oceanic whitetip sharks, three metres long, |
| [00:49.73] | and completely at home in the open ocean. |
| [00:53.18] | They may not be able to dive deep enough |
| [00:55.36] | to catch the squid themselves, |
| [00:57.22] | but that won't stop them hanging around for scraps. |
| [01:09.77] | Or maybe they're sizing up the calf. |
| [01:12.79] | This one, however, is well guarded by the bulls. |
| [01:15.96] | But in the endless blue, |
| [01:17.62] | where the odds of finding a meal are so low, |
| [01:20.50] | even the slimmest opportunity is worth a try. |
| [01:22.86] | Perhaps this is why |
| [01:22.86] | the oceanic whitetip is thought to be responsible |
| [01:22.86] | for more attacks on shipwrecked sailors than any other shark in the Pacific. |
| [01:22.86] |
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